Small grain and semi-dwarf 3, a WRKY transcription factor,negatively regulates plant height and grain size by stabilizing SLR1 expression in rice

Plant Molecular Biology - OsWRKY36 represses plant height and grain size by inhibiting gibberellin signaling. Plant height and grain size are important agronomic traits affecting yield in cereals,...     

Life-history variation in a native perennial grass (Tridens flavus): reproductive allocation,biomass partitioning,and allometry

Plant Ecology - Investment of limited resources into reproduction is a common feature of plants; coadapted life-history traits function as adaptations that have evolved to maximize fitness. There...     

Root responses to domestication,precipitation and silicification: weeping meadow grass simplifies and alters toughness

Plant and Soil - Plant breeding usually focuses on conspicuous above-ground plant traits, yet roots fundamentally underpin plant fitness. Roots show phenotypic plasticity in response to soil...     

Leaf and root traits,but not relationships among traits,vary with ontogeny in seedlings

Plant and Soil - Although leaf and root traits may change considerably throughout plant development, ontogenetic variation is rarely considered in trait-based ecology. Studies focused on how...     

干热河谷植物叶片,树高和种子功能性状比较

植物功能性状 (plant functional trait)是近年来生态学研究的热点。以云南怒江和澜沧江干热河谷36种木本植物为研究对象,选取比叶面积 (SLA)、植株高 (H) 和种子干重 (SM) 3个功能性状,研究它们的相互关系,比较其在河谷间、河谷内的差异。结果表明:1)两个河谷内36种木本植物的以上3种功能性状间没有显著的相关性 (P值分别为0.8739,0.5763,0.5517);2)河谷间的比叶面积存在显著差异 (P=0.02944),植株高和种子干重无显著差异 (P分别为0.4070, 0.8867);3)两个河谷内木本植物功能性状中,种子干重差异最大,植株高次之,比叶面积最小。     

Quantitative and mechanistic insights into the key process in the rhizodeposited carbon stabilization,transformation and utilization of carbon,nitrogen and phosphorus in paddy soil

Plant and Soil - The aim of this study was to explore the impact of soil management strategies and the contribution of root traits of plant communities and soil organic carbon (SOC) in explaining...     

New insights into secondary sexual dimorphic traits in monoecious Jatropha curcas L. (Euphorbiaceae) in Quintana Roo,Mexico

Plant Ecology - The production of unisexual flowers may favor an adjustment of floral traits to gender at plant level. In this research, the secondary sexual dimorphic traits in a native population...     

Halophyte ion regulation traits support saline adaptation of Lepidium latifolium,L. draba,and L. alyssoides

Plant Ecology - Identification of saline resistance traits of invasive plants has received little study and could reveal how some plant species utilize salt to encroach upon salinized landscapes....     

Intraspecific and interspecific variation in floral volatiles over time

Plant Ecology - Floral volatile organic compounds (VOCs) are traits that influence plant interactions with pollinators and other species. Interspecific and intraspecific variation in traits can...     

植物功能性状研究进展

植物功能性状是指植物体具有的与其定植、存活、生长和死亡紧密相关的一系列核心植物属性,且这些属性能够显著影响生态系统功能,并能够反映植被对环境变化的响应.越来越多的研究表明,相比大多数基于植物分类和数量的研究,植物功能性状在种群、群落和生态系统尺度上,都已成为解决重要生态学问题的可靠途径.本文回顾了植物功能性状研究的发展历程,总结了近10年来基于植物功能性状研究的前沿科学问题,包括功能性状的全球分布格局和内在关联,沿环境梯度的变化规律,功能多样性的定义及应用,与群落物种共存机制和群落动态变化的关系,与系统发育的关系,对生态系统功能的影响以及对各类干扰的影响和响应.尽管功能性状研究已经延伸到生态学领域的各个方面,有力推动了各个前沿科学问题的研究发展,仍然有很多值得关注和着重研究的方向.本文也对未来基于植物功能性状的研究,从性状测量和选取、研究方法以及研究方向上提出了展望,并指出,在当前全球气候变化背景下,功能性状也可应用于指导生物多样性保护和生态系统管理政策的制定.     

植物功能性状与环境和生态系统功能

植物性状反映了植物对生长环境的响应和适应,将环境、植物个体和生态系统结构、过程与功能联系起来(所谓的“植物功能性状”)。该文介绍了植物功能性状的分类体系,综述了国内外植物功能性状与气候(包括气温、降水、光照)、地理空间变异(包括地形地貌、生态梯度、海拔)、营养、干扰(包括火灾、放牧、生物入侵、土地利用)等环境因素,以及与生态系统功能之间关系的研究进展,探讨了全球变化(气候变化和CO₂浓度升高)对个体和群落植物功能性状的影响。植物功能性状的研究已经取得很多成果,并应用于全球变化、古植被恢复和古气候定量重建、环境监测与评价、生态保护和恢复等研究中,但大尺度、多生境因子下的植物功能性状研究仍有待于加强,同时需要改进性状的测量手段;我国的植物功能性状研究还需要更加明朗化和系统化。     

The Plant Ontology Consortium and plant ontologies

The goal of the Plant Ontology Consortium is to produce structured controlled vocabularies, arranged in ontologies, that can be applied to plant-based database information even as knowledge of the biology of the relevant plant taxa (e.g. development, anatomy, morphology, genomics, proteomics) is accumulating and changing. The collaborators of the Plant Ontology Consortium (POC) represent a number of core participant database groups. The Plant Ontology Consortium is expanding the paradigm of the Gene Ontology Consortium (http://www.geneontology.org). Various trait ontologies (agronomic traits, mutant phenotypes, phenotypes, traits, and QTL) and plant ontologies (plant development, anatomy [incl. morphology]) for several taxa (Arabidopsis, maize/corn/Zea mays and rice/Oryza) are under development. The products of the Plant Ontology Consortium will be open-source.     

Soil and species effects on bark nutrient storage in a premontane tropical forest

Plant and Soil - The phylogenetic variations of fine root traits, which are related to plant growth and development as well as to physiological and ecological processes, are not fully understood....     

Plant functional types and temperature control carbon input via roots in peatland soils

Plant and Soil - During historical yield improvement in soybean, breeders have seldom considered selection for root traits, generally focusing selection on yield traits. Yet, it is not known how...     

Effect of environmental factors on seed germination and seedling emergence of Viola prionantha,a cleistogamous plant

Journal of Plant Research - Environmental conditions during seed development and maturation can affect seed traits and germination behavior, yet systematic research on the effects of seed...     

Plant size,environmental factors and functional traits jointly shape the stem radius growth rate in an evergreen coniferous species across ontogenetic stages

植物个体大小、环境和功能性状共同决定了常绿针叶植物个体发育阶段的径向生长率 植株个体大小、环境及功能性状对于树木生长至关重要,然而在树木个体发育过程中其对树木生长的调控机制尚不清晰。本研究以中国东北常绿针叶树种红松(Pinus koraiensis)为研究对象,选择65株胸高直径(DBH)范围为0.3–100 cm的样树,测定当年的径向生长量、环境因素(光照、土壤养分和土壤水分)以及功能性状(叶、枝和根性状)。研究结果表明,径向生长率随DBH 变化呈单峰模式,DBH为58 cm时达到峰值。结构方程模型的分析表明,当DBH < 15 cm时,植株个体大小对径向生长存在直接的负影响,但通过增加光强而间接地促进其生长;当DBH为16–58 cm和59–100 cm时,植株大小对树木径向生长分别存在直接的正影响和负影响;当DBH < 15 cm时,光照对径向生长的影响大于土壤因素,而当DBH > 15 cm时,呈相反趋势;预测树木生长的最优性状随植株个体的增大依次由比叶面积转变为木质密度及细根氮含量。因此,植株个体大小、环境和功能性状共同驱动树木的径向生长,其相对影响随树木生长而变化,且树木径向生长的限制因素随树木生长由光照转变为土壤养分。     

Changes in defense traits of young leaves in subtropical forests succession

Plant Ecology - Plants develop diverse adaptive traits in changeable environments, yet whether plant defense traits change during succession remains unclear. In this study, we investigated the...     

青藏高原北部戈壁植物群落物种、功能与系统发育β多样性分布格局及其影响因素

戈壁荒漠广泛分布于全球干旱和极旱区域, 是我国陆地生态系统的重要组成部分。由于自然环境恶劣和交通条件限制, 目前有关戈壁植物群落物种、功能和系统发育等多维度β多样性形成机制的系统研究还很缺乏, 严重制约着对戈壁植物多样性维持机制的认知。本文以青藏高原北部61个典型戈壁生境植物群落为研究对象, 通过构建系统发育树和测量8个关键功能性状, 获取戈壁生境的物种、功能和系统发育β多样性, 比较3个维度β多样性格局与零模型的差异, 同时量化环境距离和地理距离对其的相对影响, 以探讨戈壁植物多样性的形成机制。结果显示: (1)戈壁植物的物种、功能和系统发育β多样性均表现出显著的距离衰减效应; (2)戈壁植物的物种、功能和系统发育β多样性均表现为非随机的格局; (3)由于功能性状趋同进化, 植物功能和系统发育β多样性变化趋势并不一致; (4)环境差异对植物3个维度β多样性均有着比空间距离更为重要的影响, 且土壤含水量、地表砾石盖度等局域生境因素的影响比气候更为强烈。以上结果表明, 戈壁植物的β多样性可能主要由局域生境过滤作用控制, 且不同维度的β多样性分布格局并不一致。